CN218773892U - 12-lead electrocardiosignal acquisition real-time transmission device based on low-power-consumption Bluetooth - Google Patents
12-lead electrocardiosignal acquisition real-time transmission device based on low-power-consumption Bluetooth Download PDFInfo
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Abstract
The utility model relates to a signal acquisition and transmission, in particular to a 12-lead electrocardiosignal acquisition real-time transmission device based on low-power Bluetooth, which comprises an electrocardiosignal acquisition module, an electrocardiosignal sampling circuit, a data acquisition module and a data acquisition module, wherein the electrocardiosignal acquisition module is used for receiving analog electrocardiosignals acquired by the electrocardiosignal sampling circuit and converting the analog electrocardiosignals into digital electrocardiosignals; the attitude analysis module is used for acquiring original triaxial data; the main control module is used for compressing the digital electrocardiosignals, analyzing original triaxial data through a posture analysis algorithm, judging the motion state of the human body, and transmitting the compressed data and a posture judgment result to the mobile terminal through the wireless communication module; the technical scheme provided by the utility model can effectively overcome the unable electrocardiogram of measuring patient under the motion state that prior art exists, can not look over in real time the defect with the sharing to data collection.
Description
Technical Field
The utility model relates to a signal acquisition transmission, concretely relates to 12 electrocardiosignal acquisition real-time transmission device that leads based on bluetooth low energy.
Background
The ECG monitor is the most common monitoring equipment in clinical intensive care units and mainly used for continuously monitoring and alarming physiological parameters in real time. The electrocardiograph monitor is widely applied to evaluating the heart function of a patient, electrocardiograph signals are one of biological signals which are researched and used in clinical medicine at the earliest time, are easier to detect than other biological signals and have more intuitive regularity, and therefore, the electrocardiograph analysis technology promotes the medical development.
With the great progress of science and technology and the increasing improvement of living standard of people, single-lead electrocardiograph monitoring equipment on the market is more and more, but compared with a 12-lead electrocardiograph monitor, 12 leads can acquire electrocardiograms at more positions and provide more diagnosis information for medical workers, so that a portable multi-lead electrocardiograph monitor is more and more needed to record transient heart abnormalities anytime and anywhere.
The low-power Bluetooth (BLE) is widely applied to the fields of automobile electronic equipment, medical health products, indoor positioning, remote data acquisition, data transmission and the like.
Compared with the traditional ECG monitor, the wireless channel established by the 12-lead ECG signal acquisition real-time transmission device using the Bluetooth technology has the characteristics of rapidness, accuracy and high efficiency within the range of 5 meters, and the receiving end can display the received dynamic ECG signals in real time. In addition, the acquired electrocardiosignals can be uploaded to a database for comparison, and medical staff can be better helped to diagnose diseases.
At present, the main application scenario of the common 12-lead electrocardiograph monitor in the market is still in a hospital, and the main reasons for the main application scenario are as follows: 1) The equipment is required to be placed at a fixed position due to the large volume of the equipment and the long lead wire, and a patient is required to stay at the fixed position, so that the patient cannot move freely, only the electrocardiogram of the patient in a resting state can be measured, and the electrocardiogram of the patient in a moving state cannot be measured, so that the health state of the patient cannot be comprehensively evaluated; 2) The acquired data is usually transmitted to a computer through a communication cable or copied to the computer through a storage medium such as an SD card, so that the operation is inconvenient and the electrocardiogram cannot be viewed in real time.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
To the above-mentioned shortcoming that prior art exists, the utility model provides a 12 electrocardiosignal collection real-time transmission device that leads based on bluetooth low energy can effectively overcome the unable electrocardiogram of measuring the patient under the motion state that prior art exists, can not look over in real time and share, the great defect of equipment volume to data collection.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the 12-lead electrocardiosignal acquisition real-time transmission device based on the Bluetooth low energy comprises a main control module, an electrocardiosignal acquisition module, an attitude analysis module, a wireless communication module and a shell;
the electrocardiosignal acquisition module is used for receiving the analog electrocardiosignals acquired by the electrocardiosignal sampling circuit and converting the analog electrocardiosignals into digital electrocardiosignals;
the attitude analysis module is used for acquiring original triaxial data;
the main control module is used for compressing the digital electrocardiosignals, analyzing original triaxial data through a posture analysis algorithm, judging the motion state of the human body, and transmitting the compressed data and the posture judgment result to the mobile terminal through the wireless communication module;
the electrode lead wire in the electrocardiosignal sampling circuit is connected to the HDMI male connector in a twisted mode, and the HDMI female connector matched with the HDMI male connector is arranged at the lead wire interface on the shell.
Preferably, the electrocardiosignal sampling circuit comprises ten electrode lead wires, and each electrode lead wire is connected with the electrocardiosignal acquisition module through a second-order RC low-pass filter.
Preferably, the electrocardiosignal acquisition module comprises an eight-channel and 24-bit analog-to-digital conversion chip U9 for converting analog electrocardiosignals into digital electrocardiosignals, and a right leg driving amplifier, lead disconnection detection, a Wilson center terminal and pacing detection are arranged in the analog-to-digital conversion chip U9;
the analog-to-digital conversion chip U9 has three integrated low noise amplifiers inside for generating the wilson center termination voltage and the goldberg center termination voltage required for a 12-lead EGC.
Preferably, the attitude resolution module includes a three-axis accelerometer sensor U18.
Preferably, the main control module comprises an arm port-M4 processor U4, and the main control module uploads the acquired 12-lead electrocardiographic signals and posture judgment results to software of a mobile phone terminal or a PAD terminal through a BLE5.0 communication protocol.
Preferably, the device also comprises a power module, wherein the power module comprises a key switch circuit, a BOOST voltage stabilizing circuit, an LDO voltage stabilizing circuit and a battery electric quantity detection circuit, and the BOOST voltage stabilizing circuit converts the power supply voltage of the 1.5V dry battery into stable 3V voltage through a BOOST BOOST chip to supply power to the electrocardiosignal acquisition module, the attitude analysis module and the main control module.
(III) advantageous effects
Compared with the prior art, the utility model provides a 12 electrocardiosignal acquisition real-time transmission device that leads based on bluetooth low energy has following beneficial effect:
1) In the collecting process, the patient can normally walk in a certain range by holding the equipment in hand besides measuring the electrocardiogram in the rest state, so that the real-time electrocardiogram of the patient in the motion state is recorded, the situation that only the electrocardiogram of the patient in the rest state can be measured in the past is changed, and medical workers can better and more comprehensively evaluate the health state of the patient through the electrocardiogram in the rest state and the motion state;
2) The acquired data can be stored on the mobile terminal or the cloud end, so that the electrocardiogram can be conveniently checked in real time, and meanwhile, the electrocardiogram data can be sent in modes such as sharing and the like, so that the data sharing is convenient, the device opens the application prospect of portable multi-lead electrocardiogram real-time monitoring, and a reliable design scheme is provided for portable multi-lead electrocardiogram monitoring;
3) On being connected to the public seat connector of HDMI with the transposition of electrode lead wire, lead wire kneck on the casing is equipped with the female seat connector of HDMI with the public seat connector complex of HDMI, fixes the public seat connector of HDMI and the female seat connector of HDMI on the casing after to inserting, abandons the redundant design of transition simultaneously in the aspect of the structure, and the casing is inside only to set up battery compartment, the fixed storehouse of mainboard and button storehouse, and whole volume is less, is convenient for very much handheld.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a circuit diagram of the central electrical signal acquisition module of the present invention;
fig. 3 is a circuit diagram of the central electrical signal sampling circuit of the present invention;
fig. 4 is a circuit diagram of the posture analyzing module of the present invention;
fig. 5 is a circuit diagram of the main control module of the present invention;
fig. 6 is a circuit diagram of the key switch circuit of the present invention;
FIG. 7 is a circuit diagram of the middle voltage boost and stabilizing circuit of the present invention;
FIG. 8 is a circuit diagram of the LDO voltage regulator circuit of the present invention;
fig. 9 is a circuit diagram of the battery power detection circuit of the present invention;
fig. 10 is a flowchart illustrating the operation of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A 12-lead electrocardiosignal acquisition real-time transmission device based on low-power-consumption Bluetooth, as shown in fig. 1 to 5, comprises a main control module, an electrocardiosignal acquisition module, an attitude analysis module, a wireless communication module and a shell;
the electrocardiosignal acquisition module is used for receiving the analog electrocardiosignals acquired by the electrocardiosignal sampling circuit and converting the analog electrocardiosignals into digital electrocardiosignals;
the attitude analysis module is used for acquiring original triaxial data;
the main control module is used for compressing the digital electrocardiosignals, analyzing original triaxial data through a posture analysis algorithm, judging the motion state of the human body, and transmitting the compressed data and the posture judgment result to the mobile terminal through the wireless communication module;
the electrode lead wire in the electrocardiosignal sampling circuit is connected to the HDMI male connector in a twisted mode, and the HDMI female connector matched with the HDMI male connector is arranged at the lead wire interface on the shell.
(1) The electrocardiosignal sampling circuit comprises ten electrode lead wires, and each electrode lead wire is connected with the electrocardiosignal acquisition module through a second-order RC low-pass filter.
As shown in fig. 3, only one of the ten electrode lead wires is shown in the figure, and the connection circuit between the other nine electrode lead wires and the electrocardiograph signal acquisition module is the same as that in fig. 3.
The ten electrode lead wires are RA, LA, RL, LL, V1, V2, V3, V4, V5 and V6 (for clearly showing the electrocardiosignal sampling circuit, only the V2 lead is shown in figure 3) leads respectively, the lead wires are twisted on the HDMI male connector, the bus length is about 1.4m, and a stopper is designed on the cable, so that the dispersion degree among the cables can be flexibly adjusted, and the cable is convenient for different patients to wear. The cable uses medical grade cable and silica gel material to ensure that electrocardiosignal avoids other interference.
(2) The electrocardiosignal acquisition module comprises an eight-channel and 24-bit analog-to-digital conversion chip U9 for converting analog electrocardiosignals into digital electrocardiosignals, and a right leg driving amplifier, lead disconnection detection, a Wilson center terminal and pacing detection are arranged in the analog-to-digital conversion chip U9;
the analog-to-digital conversion chip U9 has three integrated low noise amplifiers inside for generating the wilson center termination voltage and the goldberg center termination voltage required for a 12-lead EGC.
The electrocardiosignal acquisition module block consists of a low-power consumption eight-channel 24-bit analog-to-digital conversion chip U9 (model: ADS 1298) for measuring physiological signals and a peripheral circuit, and can measure human body electric signals of 10 electrodes and 12 leads.
The throughput sampling rate of the analog-to-digital conversion chip U9 is 250 sps-32 ksps, the common mode rejection ratio is-115 dB, and a peripheral clock and a reference voltage circuit are designed in a built-in mode, so that the purpose of saving space is achieved. The chip is internally integrated with a filter and an amplifier and supports programmable gains of 1, 2, 3, 4, 6, 8 or 12, and each external electrocardiosignal sampling circuit can realize the acquisition of electrocardiosignals only by a second-order RC low-pass filter.
The electrocardiosignal acquisition module has low power consumption, low noise and high common mode rejection ratio, and can greatly reduce the size and remarkably reduce the power consumption by virtue of high integration level and excellent performance, thereby providing possibility for the portability of the device and developing an extensible medical instrument system with lower cost.
(3) The attitude resolution module includes a three-axis accelerometer sensor U18.
The attitude analysis module consists of a triaxial accelerometer sensor U18 (model: LIS3 DSH) and a peripheral circuit, wherein the sensor has ultra-low power consumption, ultra-small volume and extremely simple peripheral circuit, and the design of the system is simplified to a certain extent.
(4) The main control module comprises an ARMCortex-M4 processor U4, and the main control module uploads the acquired 12-lead electrocardiosignals and posture judgment results to the software of the mobile phone terminal or the PAD terminal through a BLE5.0 communication protocol.
The main control module is composed of an ARMCortex-M4 processor U4 and a peripheral circuit, analyzes original three-axis data through an attitude analysis algorithm to judge the motion state of a human body and give a corresponding alarm, and has a step counting function.
In the technical scheme of the application, a three-axis accelerometer sensor U18 is adopted by an attitude analysis module, a main control module analyzes original three-axis data through an attitude analysis algorithm to judge the motion state of a human body, the identification principle is disclosed in a step counting method based on three-axis acceleration with an authorization notice number of CN108592941B and a step counting method and device based on a three-axis accelerometer sensor with an application publication number of CN106289309A, and the method and device belong to the prior art.
The ARMCortex-M4 processor U4 has rich peripheral resources and excellent Bluetooth wireless transmission performance, can transmit a large amount of data, ensures that main control and data transmission functions can be completed by the ARMCortex-M4 processor U4 without connecting an external singlechip or a DSP, greatly simplifies the circuit design of a system, has smaller volume and power consumption, and provides possibility for portability. The main control module uploads the acquired 12-lead electrocardiosignals and the posture judgment result to software of a mobile phone terminal or a PAD terminal through a BLE5.0 communication protocol, so that real-time data acquisition and storage are realized.
(5) As shown in fig. 6 to fig. 9, the portable electronic device further comprises a power module, wherein the power module comprises a key switch circuit, a BOOST voltage stabilizing circuit, an LDO voltage stabilizing circuit and a battery power detection circuit, and the BOOST voltage stabilizing circuit converts the power supply voltage of the 1.5V dry battery into a stable 3V voltage through a BOOST chip to supply power to the electrocardiosignal acquisition module, the posture analysis module and the main control module.
The power module consists of a key switch circuit, a boosting voltage stabilizing circuit, an LDO voltage stabilizing circuit and a battery electric quantity detection circuit, and supports the power supply of a single No. 7 and 1.5V dry battery. Because the overall average power consumption of the device is only about 40mA, an internal mos synchronous boost DC/DC converter can be used, the output current can reach 600mA, the ripple is low, the efficiency is high, and the maximum power consumption can reach 95%. Not only meets the power supply requirement, but also reduces external elements to a certain extent. In addition, because the dry battery is selected for power supply, a charging protection circuit is not needed, and the design of the system is simplified.
According to the technical scheme, the real-time acquisition of eight-channel and 24-bit electrocardiosignals is supported, the electrocardiogram measurement under two states of rest and motion is supported, the acquired eight-channel data are uploaded to the mobile terminal through BLE in real time, the real-time checking of the electrocardiogram and the checking of a final report are supported, and the data are greatly convenient to store and share.
On being connected to the public seat connector of HDMI with the transposition of electrode lead wire, lead wire kneck on the casing be equipped with the public seat connector complex of HDMI female seat connector of HDMI, with the public seat connector of HDMI and the female seat connector of HDMI to inserting the back, fix on the casing through two self tapping screws, abandon the redundant design of transition simultaneously in the aspect of the structure, the casing is inside only to set up battery compartment, the fixed storehouse of mainboard and button storehouse, whole design size 55 is 75 is 18mm, be convenient for very much handheld.
The whole device is only provided with a bag of paper towels, is light in volume and convenient to carry by hand, and only needs to fix the electrode slice on the electrode buckle during measurement, then pastes the electrode slice at the corresponding position of the body of a patient, and clicks 'start' and 'stop' by using mobile terminals such as a mobile phone or a pad and the like through a Bluetooth connecting device to control the acquisition of electrocardiosignals.
The pin functions of the electrical components in the technical scheme of the application can be checked on technical data, and the circuit connection relationship of the electrical components can be connected according to the technical data, so that the work can be completed by a person skilled in the art.
It should be noted that the technical solution of the present application is only for providing a hardware configuration different from the prior art, so that the skilled person can implement further development under such a hardware configuration, and the software program can be programmed by the programmer in the field at a later stage according to the actual effect requirement.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. 12 electrocardiosignal acquisition real-time transmission device that leads based on bluetooth low energy, its characterized in that: the electrocardiosignal acquisition module comprises a main control module, an electrocardiosignal acquisition module, an attitude analysis module, a wireless communication module and a shell;
the electrocardiosignal acquisition module is used for receiving the analog electrocardiosignals acquired by the electrocardiosignal sampling circuit and converting the analog electrocardiosignals into digital electrocardiosignals;
the attitude analysis module is used for acquiring original triaxial data;
the main control module is used for compressing the digital electrocardiosignals, analyzing original triaxial data through a posture analysis algorithm, judging the motion state of the human body, and transmitting the compressed data and a posture judgment result to the mobile terminal through the wireless communication module;
an electrode lead wire in the electrocardiosignal sampling circuit is connected to the HDMI male connector in a twisted mode, and an HDMI female connector matched with the HDMI male connector is arranged at the interface of the lead wire on the shell.
2. The bluetooth low energy-based 12-lead electrocardiographic signal acquisition real-time transmission device according to claim 1, characterized in that: the electrocardiosignal sampling circuit comprises ten electrode lead wires, and each electrode lead wire is connected with the electrocardiosignal acquisition module through a second-order RC low-pass filter.
3. The bluetooth low energy-based 12-lead electrocardiographic signal acquisition real-time transmission device according to claim 2, characterized in that: the electrocardiosignal acquisition module comprises an eight-channel and 24-bit analog-to-digital conversion chip U9 for converting analog electrocardiosignals into digital electrocardiosignals, and a right leg driving amplifier, lead disconnection detection, a Wilson center terminal and pacing detection are arranged in the analog-to-digital conversion chip U9;
the analog-to-digital conversion chip U9 has three integrated low noise amplifiers inside for generating the wilson center termination voltage and the goldberg center termination voltage required for a 12-lead EGC.
4. The bluetooth low energy-based 12-lead electrocardiographic signal acquisition real-time transmission device according to claim 1, characterized in that: the attitude resolution module includes a three-axis accelerometer sensor U18.
5. The bluetooth low energy-based 12-lead electrocardiographic signal acquisition real-time transmission device according to claim 1, characterized in that: the main control module comprises an ARM Cortex-M4 processor U4, and uploads the acquired 12-lead electrocardiosignals and posture judgment results to software of a mobile phone end or a PAD end through a BLE5.0 communication protocol.
6. The real-time transmission device for low-power consumption Bluetooth-based 12-lead electrocardiosignal acquisition according to any one of claims 1-5, which is characterized in that: still include power module, power module includes key switch circuit, step up voltage stabilizing circuit, LDO voltage stabilizing circuit and battery power detection circuit, step up voltage stabilizing circuit converts 1.5V dry battery supply voltage into stable 3V voltage through BOOST BOOST chip and gives electrocardiosignal acquisition module, gesture analysis module, main control module power supply.
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| CN202221941748.8U CN218773892U (en) | 2022-07-26 | 2022-07-26 | 12-lead electrocardiosignal acquisition real-time transmission device based on low-power-consumption Bluetooth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120713534A (en) * | 2025-08-19 | 2025-09-30 | 中国科学院合肥物质科学研究院 | Device and method for collecting 12-lead ECG without lead wires |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120713534A (en) * | 2025-08-19 | 2025-09-30 | 中国科学院合肥物质科学研究院 | Device and method for collecting 12-lead ECG without lead wires |
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